Sorry for the delay on the review, dealing with TOPF. Ground Feel: 3.5 Zero Drop: 5 Flexibility: 4.5 Toe Box: n/a Weight: Comfort: 4 Fit: 4.5 Traction: 3 Durability: 5 (5,000 mile warranty) Performance: 4 Cross Training: n/a Design: 3.5 Aesthetics: 3 I've only ran 2 runs in them so far (1 mile and 2 miles), but they feel pretty natural. It didn't take long to hardly notice them being on (other then ground feel being muffled). Having never worn between the toe sandals I was worried about being irritated but during the two short runs there was no discomfort. As far as ground feel went, I could still feel cracks, chip and seal, and rocks, just slightly muted. There was no flapping of the front sole which was another concern I had had. I must say Xero Shoes were very quick with the order. I sent them my tracing via fax on a Thursday and received the Contacts on Saturday.